Fix ORT-web graph capture bug

[ysdede]

Refactored session options in src/preprocessor.js and src/parakeet.js to avoid explicitly passing enableGraphCapture: false.

Due to a bug in ORT-web, passing the flag as false can still inadvertently trigger the graph-capture execution path, which causes external buffer requirements and fails. This patch ensures the property is only included when explicitly true and that it is fully removed from retry options when the initial capture attempt fails.

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PR created automatically by Jules for task 16420744521506251835 started by @ysdede

Summary by Sourcery

Adjust ONNX Runtime Web session options to avoid incorrectly triggering graph capture and to cleanly remove the option on retry when unsupported.

Bug Fixes:

• Prevent ORT-web sessions from inadvertently taking the graph-capture code path when graph capture is disabled by ensuring the option is only set when true and removed entirely on retry.

Enhancements:

• Refine Parakeet and preprocessor session option construction to rely on conditional inclusion of the graph capture flag instead of explicitly setting it to false.

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[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request resolves an issue in ORT-web related to graph capture. The changes prevent the graph capture execution path from being triggered when it is explicitly disabled, and ensures that retry logic correctly handles scenarios where graph capture is unsupported. This improves the stability and reliability of ORT-web when graph capture is not desired or supported.

Highlights

• Graph Capture Bug Fix: This PR addresses a bug in ORT-web where disabling graph capture could still inadvertently trigger the graph-capture execution path, leading to failures.
• Session Options Refactoring: The PR refactors session options in src/preprocessor.js and src/parakeet.js to conditionally include enableGraphCapture only when explicitly set to true.
• Retry Logic Improvement: The changes ensure that the enableGraphCapture property is fully removed from retry options when the initial capture attempt fails.

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[gemini-code-assist]

Code Review

This pull request effectively addresses a bug in ORT-web related to graph capture. The changes in src/parakeet.js and src/preprocessor.js correctly modify how session options are handled, ensuring the enableGraphCapture property is only present when true and is properly removed during retries. The implementation is clean, consistent, and uses modern JavaScript features well to solve the problem.